The best mobile plan in Japan depends less on the advertised price and more on your documents, payment method, data pattern, calling needs, and where you actually use your phone.
Use the mobile comparison entry first, then narrow your shortlist to two plans.
A quick decision frame
- Choose povo if you want flexible data toppings and can manage the app yourself.
- Choose LINEMO if you want an online SoftBank-brand option with simple data tiers.
- Choose Rakuten Mobile if you use a lot of data and can check coverage carefully.
- Choose ahamo if you want a simple docomo-brand plan with a fixed data allowance and included short domestic calls.
- Add UQ mobile if you want an au sub-brand option with more store-support possibilities.
What to confirm before applying
Check whether you need a residence card, which payment methods are accepted, whether eSIM is available, and whether your name/address format matches your identity documents. Prices, campaigns, and conditions can change, so confirm the official website before applying.
Common mistakes
People often compare only the lowest monthly fee. That misses call charges, data add-ons, campaign conditions, payment restrictions, and coverage problems around home or school.
Next step
Write down your monthly data use, calling pattern, and payment method. Then compare plans on TachiSuke mobile and keep first-week setup nearby so you do things in the right order.